There's a few other differences.
The header tank in a longer, flatter kind on a phase one, and the coolant pipes are different, you'll notice more by the water pump as there'll be no swirl pot and more bleed nipples.
The throttle cable goes to a pivot thingy on a phase one and has a shorter cable, where the phase two loops right round.
The phase one has extra bits on the exhaust manifold, which make it a pain to remove/tighten the nuts.
The aei unit will be engine side of the bulk head, unless it's been removed.
The oil return for the sump is smaller, and on early ones they were baffled.
There's a few other bits but they don't make a lot of difference.